[Sync] Add support for sync Persistence Errors

chrome/browser/webdata/autocomplete_syncable_service.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/webdata/autocomplete_syncable_service.h"
 
 #include "base/location.h"
 #include "base/logging.h"
 #include "base/strings/utf_string_conversions.h"
 #include "components/autofill/core/browser/webdata/autofill_table.h"
@@ skipping 220 matching lines @@
   return current_data;
 }
 
 syncer::SyncError AutocompleteSyncableService::ProcessSyncChanges(
     const tracked_objects::Location& from_here,
     const syncer::SyncChangeList& change_list) {
   DCHECK(CalledOnValidThread());
   DCHECK(sync_processor_.get());
 
   if (!sync_processor_.get()) {
-    syncer::SyncError error(FROM_HERE, "Models not yet associated.",
-                    syncer::AUTOFILL);
+    syncer::SyncError error(FROM_HERE,
+                            syncer::SyncError::DATATYPE_ERROR,
+                            "Models not yet associated.",
+                            syncer::AUTOFILL);
     return error;
   }
 
   // Data is loaded only if we get new ADD/UPDATE change.
   std::vector<AutofillEntry> entries;
   scoped_ptr<AutocompleteEntryMap> db_entries;
   std::vector<AutofillEntry> new_entries;
 
   syncer::SyncError list_processing_error;
 
@@ skipping 230 matching lines @@
                            UTF16ToUTF8(entry.key().value())));
   return syncer::SyncData::CreateLocalData(tag, tag, autofill_specifics);
 }
 
 // static
 std::string AutocompleteSyncableService::KeyToTag(const std::string& name,
                                                   const std::string& value) {
   std::string ns(kAutofillEntryNamespaceTag);
   return ns + net::EscapePath(name) + "|" + net::EscapePath(value);
 }